基于CFD的汽车外流场数值模拟  

Numerical simulation of flow field for cars based on fluent

作　　者：孟生才[1] 陈倩云[2] 

机构地区：[1]马鞍山职业技术学院机械工程系,安徽马鞍山243031 [2]江苏大学机械工程学院图形技术研究所,江苏镇江212013

出　　处：《齐齐哈尔大学学报（自然科学版）》2014年第4期32-36,共5页Journal of Qiqihar University(Natural Science Edition)

摘　　要：CFD(计算流体力学)软件由于其经济性在汽车动力学上得到了广泛的应用,其方法对于预测和改进汽车的气动性能,以及对于指导汽车的产品设计都具有重要的意义。利用ANSYS ICEM对汽车外流场进行二维建模并对其进行网格划分,基于ANSYS FLUENT对外流场进行数值模拟,得出其压力云图、速度云图和速度矢量图。从直观上对汽车外流场的气流情况有了了解,通过数值模拟的数据对汽车外流场的实际情况进行分析,为优化汽车的气动性能提供了理论依据。CFD software has been widely used in vehicle dynamics because of economy, the method of which has a profound effect on the prediction and improvement of aerodynamic performance, as well as the car designing. A 2d model was built and the mesh was presented based on ANSYS ICEM. The pressure contour, velocity contour and velocity vector graphic were obtained by the numerical simulation of flow field for cars based on FLUENT. Therefore, from the current situation of flow field, an intuitive understanding was received and the theory evidence was provided for the optimization of car＇s aerodynamic performance.

关 键 词：CFD 汽车 外流场 数值模拟 

分 类 号：TH122[机械工程—机械设计及理论]